Skip to product information
1 of 6

TooHighPsi Engineering

TooHighPsi LTx Billet Thermostat Housing

Regular price $199.95 USD
Regular price Sale price $199.95 USD
Sale Coming Soon!
Shipping calculated at checkout.

IMPORTANT NOTE ON AVAILABILITY: We are expanding and moving to a new location this month. Orders placed between now and the end of February 2024 may experience slightly longer lead-times of up to 6 weeks. Please call, text or email to verify item availability.


TooHighPsi Engineering's Billet Thermostat Housing for all LTx engine applications has been carefully designed to maximize the cooling performance of your LT1/LT4 engine build. Precision machined in-house from a solid piece of 6061 T6 aluminum, the housing incorporates a unique double O-ring seal to completely eliminate coolant leaks and ORB style interchangeable barbs for the main coolant and steam vent hoses.  

The housing replaces the factory plastic housing and is designed to work with standard LS-style thermostats used in the LS3/LSA/LS9 engine applications.  The kit includes:

Thermostat housing finished in raw billet aluminum

-20 ORB to 34mm hose barb with O-ring

-4 ORB to 8mm hose barb with O-ring

(3) M6 zinc plated fasteners